Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/32119
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Title

Optical emission from single, charge-tunable quantum rings

AuthorsWarburton, Richard J.; Schäflein, C.; Haft, Dirk; Bickel, F.; Lorke, Axel; Karrai, Khaled; García Martínez, Jorge Manuel CSIC ORCID CVN ; Schoenfeld, W. V.; Petroff, Pierre M.
KeywordsQuantum dots
Photoluminescence
Tunneling
Issue DateJan-2001
PublisherElsevier
CitationPhysica E 9(1): 124-130 (2001)
AbstractWe have succeeded in preparing excitons with a specific charge in single semiconductor quantum rings. Buried InAs quantum rings are loaded with electrons from a reservoir through a tunneling barrier and an additional electron–hole pair is generated by optical excitation. Single rings are addressed with nano-optical techniques. We observe abrupt shifts in the emission energy as electrons are added one by one. Furthermore, the experiments provide unique insights into the interaction of electrons in semiconductor nano-islands with their environment.
Description7 páginas, 5 figuras.
Publisher version (URL)http://dx.doi.org/10.1016/S1386-9477(00)00186-7
URIhttp://hdl.handle.net/10261/32119
DOI10.1016/S1386-9477(00)00186-7
ISSN1386-9477
Appears in Collections:(IMN-CNM) Artículos

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